I've always hated the English saying "your mileage may vary" because I intuitively misunderstand it every time I read it.
I associate "mileage" with experience. The more "mileage" a person has, the more experienced he/she is. To me the saying reads "you might disagree with the statement I made because you're so inexperienced". Every time. Even though I know it doesn't mean that, but simply "it may be different in your experience".
So it's a pretty annoying saying, in my opinion. YMMV.